Conditions That Affect Weld Bead Shape; Electrode Movement During Welding - Miller Electric Bobcat 225 Owner's Manual

14-8. Conditions That Affect Weld Bead Shape

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Weld bead shape is affected by electrode angle, arc length, travel speed, and thickness of base metal.

14-9. Electrode Movement During Welding

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Normally, a single stringer bead is satisfactory for most narrow groove weld joints; however, for wide groove weld joints or bridging across gaps,
a weave bead or multiple stringer beads work better.
1
OM-4434 Page 60
Correct Angle
Angle Too Small 10
Drag
ELECTRODE ANGLE
Too Short
ARC LENGTH
Slow
TRAVEL SPEED
3
Angle Too Large
° - °
30
Normal Too Long
Normal Fast
2
Spatter
1 Stringer Bead − Steady
Movement Along Seam
2 Weave Bead − Side to Side
Movement Along Seam
3 Weave Patterns
Use weave patterns to cover a wide
area in one pass of the electrode.
Do not let weave width exceed
2-1/2 times diameter of electrode.
S-0061
S-0054-A